Use of Symantec Encryption Desktop to shred the free space of Drive C has disabled Norton Security Deluxe twice recently. This required Norton Security to be installed again. This has occurred twice on two separate shredding processes in the past two weeks. Prior to this time shredding the free space of drive C was not a problem. Norton's continued in operation while the free space was shredded three times on each of the two occasions. This was the same procedure used in the past with now problems. Any ideas on what the problem is and how to prevent a future problem if the Symantec product is to be used for Drive C free space shredding? I'm using Windows 7 Ultimate Service Pack 1 64 Bit, upgraded from Vista Ultimate, Intel Core 2 Quad CPU Q8300 2.5GHz RAM 8.0GB. Computer is an HP Pavilion a6750t .Thanks.
Jerry